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26062 Citrate, 24 Hour Urine (0020852)

Citrate, 24 Hour Urine (0020852)
Test Code: CITRTSO
Synonyms/Keywords
​Citrate
Citric Acid, Random Urine
Citric Acid,  Urine
Citric Acid/Creatinine Ratio, Random Urine
Urinary Citrate Excretion
24 CITRTSO
Test Components
​Citric Acid-per 24hr
Citric Acid/Creatinine Ratio, Urine
Useful For
24 hour urine citrate
Specimen Requirements
Fasting Required Specimen Type Preferred Container/Tube Acceptable Container/Tube Specimen Volume Specimen Minimum Volume
(allows for 1 repeat)		 Pediatric Minimum Volume
(no repeat)
​No ​24 Hour Urine ​Urine Jug ​Transfer tub ​4.0 mL ​0.5 mL ​
Collection Processing Instructions

Collect 24-hour urine.  Refrigerate during collection.  Also acceptable:  Random urine.

Adjust pH to less than or equal to 2 by adding 6M HCl. Transfer a 4 mL aliquot of urine to a Standard Transport Tube. (Min: 0.5 mL) Record total volume, collection time interval, and pH on transport tube and test request form. Also acceptable: Specimens previously preserved with boric acid.

Storage/Transport Temperature:  Refrigerated

For sites that do not have access to HCl, the urine can be poured off into a sage cup and sent to Marshfield Labs at refrigerated temperatures for preservation prior to submission to ARUP. 

Specimen Stability Information
Specimen Type Temperature Time
​Urine ​Frozen Indefinitely
​ ​Room Temperature ​8 hours
​ ​Refrigerated ​1 week
Performing Laboratory Information
Performing Location Day(s) Test Performed Analytical Time Methodology/Instrumentation
​ARUP Laboratories ​Daily 1 day ​Quantitative Enzymatic
Reference Lab
ARUP Laboratories
Reference Range Information
Performing Location Reference Range
​ARUP ​Citric Acid, Urine – per 24h:  18 years and older: 320-1240 mg/d
Citric Acid/Creatinine Ratio, Urine:  1 year and older: greater than or equal to 150 mg/g.
Outreach CPTs
CPT Modifier
(if needed)		 Quantity Description Comments
​82507 ​ ​1 ​ ​
Synonyms/Keywords
​Citrate
Citric Acid, Random Urine
Citric Acid,  Urine
Citric Acid/Creatinine Ratio, Random Urine
Urinary Citrate Excretion
24 CITRTSO
Test Components
​Citric Acid-per 24hr
Citric Acid/Creatinine Ratio, Urine
Ordering Applications
Ordering Application Description
COM ​Citrate, 24 Hr Urine (0020852)
​Cerner Citrate, 24 Hr Urine (0020852)
If the ordering application you are looking for is not listed, contact your local laboratory for assistance.
Specimen Requirements
Fasting Required Specimen Type Preferred Container/Tube Acceptable Container/Tube Specimen Volume Specimen Minimum Volume
(allows for 1 repeat)		 Pediatric Minimum Volume
(no repeat)
​No ​24 Hour Urine ​Urine Jug ​Transfer tub ​4.0 mL ​0.5 mL ​
Collection Processing

Collect 24-hour urine.  Refrigerate during collection.  Also acceptable:  Random urine.

Adjust pH to less than or equal to 2 by adding 6M HCl. Transfer a 4 mL aliquot of urine to a Standard Transport Tube. (Min: 0.5 mL) Record total volume, collection time interval, and pH on transport tube and test request form. Also acceptable: Specimens previously preserved with boric acid.

Storage/Transport Temperature:  Refrigerated

For sites that do not have access to HCl, the urine can be poured off into a sage cup and sent to Marshfield Labs at refrigerated temperatures for preservation prior to submission to ARUP. 

Specimen Stability Information
Specimen Type Temperature Time
​Urine ​Frozen Indefinitely
​ ​Room Temperature ​8 hours
​ ​Refrigerated ​1 week
Useful For
24 hour urine citrate
Test Components
​Citric Acid-per 24hr
Citric Acid/Creatinine Ratio, Urine
Reference Range Information
Performing Location Reference Range
​ARUP ​Citric Acid, Urine – per 24h:  18 years and older: 320-1240 mg/d
Citric Acid/Creatinine Ratio, Urine:  1 year and older: greater than or equal to 150 mg/g.
For more information visit:
Performing Laboratory Information
Performing Location Day(s) Test Performed Analytical Time Methodology/Instrumentation
​ARUP Laboratories ​Daily 1 day ​Quantitative Enzymatic
Reference Lab
ARUP Laboratories
For billing questions, see Contacts
Outreach CPTs
CPT Modifier
(if needed)		 Quantity Description Comments
​82507 ​ ​1 ​ ​
For most current information refer to the Marshfield Laboratory online reference manual.